Improvement in machines for making endless bands



UNITED STATES PATENT EEIGEoA TRUMAN PIPER, OF BIRMINGHAM, CONNECTICUT,ASSIGNOR TO THE HOWE MANUFACTURING COMPANY, OF SAME PLACE.

IMPROVEMENT IN MACHINES' FOR MAKING ENDLESS BANDS.

Specification forming part of Letters Patent No. 147,974, dated February24, 1874; application filed April 30, 1873.

To all whom it may concern:

Be it known that I, TRUMAN PTPER, of Birmingham, in the county of NewHaven and State of Connecticut, have invented a new Improvement inMachine for Making Endless Bands; and I do hereby declare the following,when taken in connection with the accompanying drawings and the lettersof reference marked thereon, to be a full, clear, and exact descriptionof the same, and which said drawings constitute part of thisspecification, and represent, in-

Figure l, a front view; Fig. 2, a side view; and, in Fig. 3, a verticalcentral section on line a:

This invention relates to the construction'of a machine for makingendless bands or ropes such as are required in various lkinds ofmachines, and for other purposes, and which are usually made by unitingtwo ends of a round cord, the object of the invention being to make anendless twisted band, and it consists in a device carryin g the threador cord to be laid, and which revolves around a central tube, andcombined with means for imparting to the thread being revolved anindependent rotary motion, which shall put into the cord the necessarytwist to cause it to lie in its proper position in the cord being made,as more fully hereinafter described.

A is the bed of the machine, with suitable supports B for the mechanism.At a convenient point, a tube, C, is arranged, which forms the center,around which theoperative parts revolve. D is a head arranged uponanti-fric tion rolls E, more or less in number, or otherwise supported,so as to be revolved freely around the said tube as a center of motion.l

band runs around the head D, so `that when the pulley is depressed itwill draw the beltV end hung to the frame, as at b, extending overV inthe path of the pulley I, the other end attached by a rod, L1, to thetreadle L2, so that, by depressing the treadle L2, the yoke L will bedrawn down, as `denoted in broken lines, Fig. 2, to bring its innersurface upon the pulley I, and so that, as the head D revolves, thepulley I, bearing aga-inst the inner surface of the yoke L, will becaused to revolve, turning .y with it the case H. A spring is providedbeneath the treadle L2 to hold the yoke L up from the pulley when notrequired for use. Within the case H a spool, N, or the ball of cord,thread, or whatever it is desired to work into the band, is placed.

To make a band, the materia-lis drawn from the spool N, passed aroundand through the tube C, its end united to the cord at the requireddistance from the end, that the band when completed will be the lengthrequired, thus forming an endless loop running through the tube C. Thenthe operator, taking the strand at the junction, holds it to prevent itstwisting and presses his foot upon the treadle G', which causes therevolution of the head D to carry the spool around the tube, laying theJstrand around itself at each revolution, the operator guiding the lay ofthe cord as it revolves. The two strands--that is, the original loop andthe winding strand-will be gradually twisted together, the operator.drawing it through the tube as it becomes twisted. In order to give tothe cord `the necessary kink, that it may naturally lay the twist, theoperator presses his foot upon the treadle L2 to draw down the yokel L,and this will revolve the spool, each revo= lution putting twist intothe strands running from the spool. Some kinds of cord will reA quiremore twist than others, and in applying this twist the operator must usehis judgment.

Continuing the operation, the twistin g of the two continues until theplace of beginning is reached, which will have formed a band of twostrands. If a band of three or more strands is required, then continuethe operation around as manT times as required, and when the band iscompleted cut the strands at that point and secure the end, and the bandis complete.

In order to remove the band when completed, the tube C is made with aslot the entire length vof one side, with a sleeve, S, as seen in Fig.4,

to close the said slot, and when this sleeve is removed the band may betaken from the tube through the slot. Through the head D a slot, d, asseen in Fig. 1, is formed, which allows the band to be removed from thehead.

I find the material best adapted for the making` of endless bands bythis process to be the strands of cords which have been twisted. Toprocure these, I take a cord of the required diameter and separate thestrands, using a singlel strand in the formation of a band.

I claim as my invention- 1. In combination with the open or slotted tubeC, through which the band passes in the process of construction, theopen or slotted head D, carrying the material from which the band isformed, and revolving around the said tube C, substantially asspecified.

2. In combination with the open or slotted tube C and head D, the caseH, arranged upon the said head, and means, substantially such asdescribed, to' impart to the said ease a revolution upon its own axis,and independent of that of the head.

3. Incombination with the tube C, head D, and case II, the treadle G andthe drivingpulley F, operating, as described, so as to cause or arrestthe revolution of the head'D.

4. In combination with the tube C, revolving head D, and ease H, theyoke L and treadle L2, for the purpose of imparting the requisiterotation to the said case H, substantially as described.

TRUMAN PIPER.

Witnesses:

Jol-IN E. EARLE, J. H. SnUMwAY.

